private void OnEntityRemoved(Entity entity)
{
Log($"Entity {entity.Name} removed.");
SceneItem sceneUpdated = FindSceneInTree(Scenes, entity.Scene);
if (sceneUpdated != null)
{
sceneUpdated.OnEntityRemoved(entity);
}
}
private void Children_CollectionChanged(object sender, Xenko.Core.Collections.TrackingCollectionChangedEventArgs e)
{
switch (e.Action)
{
case System.Collections.Specialized.NotifyCollectionChangedAction.Add:
Scene scene = (Scene)e.Item;
Scene parentScene = scene.Parent;
if (parentScene != null)
{
SceneItem parentInTree = FindSceneInTree(Scenes, parentScene);
if (parentInTree != null)
{
//Add in the scene into the tree
EntityTreeItem newSceneInTree = new EntityTreeItem(scene);
Scenes.Add(new SceneItem(newSceneInTree));
parentInTree.Entities.Add(newSceneInTree);
foreach (var entity in scene.Entities)
{
OnEntityAdded(entity);
}
//In the unlikely event that additional child scenes have been added before XLE
//pickup up the event, loop recruisevly
foreach (var s in scene.Children)
{
Children_CollectionChanged(null,
new Xenko.Core.Collections.TrackingCollectionChangedEventArgs(
System.Collections.Specialized.NotifyCollectionChangedAction.Add, s, null, 0, false)
);
}
}
}
break;
case System.Collections.Specialized.NotifyCollectionChangedAction.Remove:
//Trigger a rebuild of the tree
//Bit of task trickery here as the this even fires well before actual unloading
var t = Task.Factory.StartNew(() =>
{
Task.Delay(500).Wait(); //TODO: 500 is totally a magic number here
BuildTree();
},
CancellationToken.None,
TaskCreationOptions.None,
TaskScheduler.FromCurrentSynchronizationContext()
);
break;
case System.Collections.Specialized.NotifyCollectionChangedAction.Replace:
break;
case System.Collections.Specialized.NotifyCollectionChangedAction.Move:
break;
case System.Collections.Specialized.NotifyCollectionChangedAction.Reset:
break;
default:
break;
}
}